Patents
Sitemap › H04 - Electric communication technique › H04L - Transmission of digital information, e.g. telegraphic communication › H04L 12 - Data switching networks
Patents for H04L 12 - Data switching networks (448,999)
11/1990
11/27/1990US4973954 Network user for maintaining data and energy transmission
11/27/1990US4973953 Data transmission system with improved fault
11/27/1990CA1277041C Switching system control arrangements
11/27/1990CA1277017C Fast assignment technique for use in a switching arrangement
11/22/1990EP0398614A1 Data communications network
11/22/1990EP0398380A2 Communication network system using a fuzzy control process
11/22/1990EP0398037A2 Packet network with communication resource allocation and call set up control of higher quality of service
11/22/1990EP0397934A1 Bit stream machine
11/21/1990CN1010539B Method and device for exchanging with mixing-type groups
11/20/1990US4972504 Marketing research system and method for obtaining retail data on a real time basis
11/20/1990US4972462 Multimedia mail system
11/20/1990US4972432 Multiplexed synchronous/asynchronous data bus
11/20/1990CA1276714C Time stamp and packet virtual sequence numbering for reconstructing information signals from packets
11/15/1990WO1990013957A1 Modular architecture for very large packet switch
11/15/1990WO1990013956A1 Distributed intelligence network using time and frequency multiplexing
11/15/1990DE3915486A1 Digital fibre optic telephone and data network - uses high capacity fibre optic, microwave and short wave links with parallel standby facilities
11/15/1990DE3915258A1 Data bus capacitive load reducing circuit - uses variable resistor of low capacity w.r.t. bus driver as switching element
11/15/1990DE3914667A1 Data packet reception and retransmission method - using cross coupled modules with random access memories to enable fast control of data
11/15/1990DE3906793A1 Method for correcting cell losses in the transmission of digitally coded analog signals
11/14/1990EP0397384A1 Sequence synchronisation
11/14/1990EP0397370A2 Network control arrangement for processing a plurality of connection requests
11/14/1990EP0397198A2 Transfer strobe time delay selector and method
11/14/1990EP0397188A2 A bridge apparatus and a communicaton system between networks using the bridge apparatus
11/14/1990EP0397144A1 Wordwise serial-to-parallel converter circuit
11/14/1990EP0397142A1 Parallel frame synchronization circuit
11/14/1990EP0396686A1 A process and device for the decentralised transmission of information on a transfer path.
11/14/1990EP0396589A1 Method and apparatus for automatic loading of a data set in a node of a communication network.
11/14/1990EP0396562A1 Statistical measurement equipment and telecommunication system using same
11/13/1990US4970720 Packet communication exchange including dummy packet transmission
11/13/1990US4970717 Photonic local/metropolitan area network
11/13/1990CA1276252C Telecommunication system with means to maintain unchanged in bus-connecting station transformers the core magnetization at instant of pulse termination
11/07/1990EP0396084A2 Fault-tolerant star interconnected local area network
11/07/1990EP0395828A2 Optical transmission apparatus
11/06/1990USRE33426 Multi-network system
11/06/1990US4969149 Switching network for a switching system
11/06/1990US4969147 Network and intelligent cell for providing sensing, bidirectional communications and control
11/06/1990US4969088 Hardware mechanism for automatically detecting hot-spot references and diverting same from memory traffic in a multiprocessor computer system
11/03/1990CA2015220A1 Local area network
11/02/1990CA2006241A1 Modular architecture for very large packet switch
11/01/1990WO1990013194A1 Terminal polling method
11/01/1990WO1990013193A1 Double bus type network
10/1990
10/31/1990EP0395495A1 Adaptive network routing for power line communications
10/31/1990EP0395483A1 Double closed-lap communication system
10/31/1990EP0395428A2 Communication protocol for statistical data multiplexers arranged in a wide area network
10/31/1990EP0119218B1 Bulk/interactive data switching system
10/31/1990DE4013420A1 Netzsteuereinrichtung Network controller
10/31/1990DE3914162A1 Packet data signal routing device - has path data extracted from packet to control route switches for stored data
10/31/1990CN1010264B Local area network special function frames
10/31/1990CN1010261B Peripheral bus
10/30/1990US4967409 Network system of programmable controllers
10/30/1990US4967345 Method of selecting least weight routes in a communications network
10/30/1990CA1275699C Dual media local area network interfacing
10/28/1990CA2015602A1 Communication protocol for statistical data multiplexers arranged in a wide area network
10/24/1990EP0393898A2 Programmable data packet buffer prioritization arrangement
10/24/1990EP0393569A2 Protected information transfer system
10/24/1990EP0393351A2 Method and circuit for determing cell dropping and/or insertion during transmission of cell-structured signals via a cell-oriented transmission system
10/24/1990EP0393293A1 Method and apparatus for cyclic reservation multiple access in a communications system
10/24/1990EP0235253B1 Data processing system for a local area network
10/24/1990CN1046427A Asyn hronous time-division multiservice digital satellite center for connecting subscribers
10/23/1990US4965792 Collision/detection single node controlled local area network
10/23/1990US4965790 Communication system for forming different networks on the same ring transmission line
10/23/1990US4965788 Self-routing switch element for an asynchronous time switch
10/23/1990CA1275506C Data transmission security arrangement for a plurality of data stations sharing access to a communication network
10/23/1990CA1275464C Local area network with multiple node bus topology
10/21/1990CA2015085A1 Packet network with communication resource allocation and call set up control of higher quality of service
10/20/1990CA2014792A1 Terminal polling method
10/18/1990WO1990012466A1 A technique for dynamically changing an isdn connection during a host session
10/18/1990WO1990012463A1 Spread spectrum-time diversity communications systems and transceivers for multidrop local area networks
10/18/1990WO1990012462A1 Infrared network entry permission method and apparatus
10/17/1990EP0392415A1 Asynchronous digital time- multiplexed multi-service subscriber connection satellite centre
10/17/1990EP0392216A2 Network rearrangement method and system
10/17/1990EP0392212A2 Method for controlling the formation of connections for data transmission in telecommunication systems
10/17/1990EP0392209A2 Communication system having two data processing units each having function of monitoring the other data processing unit
10/17/1990EP0392173A2 Fairness algorithm for full-duplex buffer insertion ring
10/17/1990CN1046252A Process and apparatus for accessing communications medium shared among users transmitting in circuit mode or packet mode with different priority levels
10/16/1990US4964120 Method of detecting a cable fault and switching to a redundant cable in a universal local area network
10/16/1990US4964119 Method and system for packet exchange
10/16/1990US4964113 Multi-frame transmission control for token ring networks
10/16/1990US4964076 System for controlling data bus communications of a data bus for vehicles
10/16/1990US4963862 Terminal equipment identifier control circuit
10/16/1990US4963763 Load control system and method for disconnecting sub-bus from main-bus
10/10/1990EP0391792A1 Method and device for accessing a communication medium shared between users transmitting with different priority levels in a circuit or packet mode
10/10/1990EP0391583A2 Dual-path computer interconnect system with four-ported packet memory control
10/10/1990EP0390978A1 Communication system with a two-wire serial backbone bus for connecting bridges to secondary three-wire buses
10/10/1990EP0390920A1 Series controller
10/10/1990EP0279831B1 Device for the fail-safe transmission, in a reliable manner as regards signalling techniques, of serial data between fail-safe computers operating preferably on two channels by means of a twin-loop bus system
10/10/1990CN1046078A Communications systems
10/10/1990CA2005734A1 Technique for dynamically changing an isdn connection during a host session
10/09/1990US4962532 Method for providing notification of classified electronic message delivery restriction
10/09/1990US4962499 Switching system for switching packet oriented data as well as circuit oriented data
10/09/1990US4962497 Building-block architecture of a multi-node circuit-and packet-switching system
10/09/1990US4962378 Digital data communications system
10/07/1990CA2011935A1 Dual-path computer interconnect system with four-ported packet memory control
10/04/1990WO1990011659A1 Congestion free packet network
10/03/1990EP0390567A2 Eletronic device with exclusive control type communication function and its communication system
10/03/1990EP0390333A2 Communications systems
10/03/1990EP0390015A1 Device for processing signalling messages in a communication network using an asynchronous time technique
10/03/1990EP0389754A2 Broadcast station locator for a local area network
10/03/1990EP0389729A1 Data transmission system with a link problem determination aid (LPDA) support for all ports
10/03/1990CN1009894B Thin-wire multiport repeater
1 ... 4440 4441 4442 4443 4444 4445 4446 4447 4448 4449 4450 4451 4452 4453 4454 4455 4456 4457 4458 4459 4460 ... 4490